How to Deep Clean a Dishwasher: Step-by-Step Guide for a Fresh & Sparkling Machine

Introduction

Why You Should Deep Clean Your Dishwasher

You rely on your dishwasher to keep your dishes spotless—but have you ever thought about cleaning the dishwasher itself?
Over time, food particles, soap scum, grease, and mineral deposits build up inside your machine. The result? A smelly, less-efficient dishwasher that can even leave residue on your dishes.

If you’ve noticed an unpleasant odor or cloudy glasses, it’s time to learn how to deep clean a dishwasher the right way. In this complete home cleaning guide, we’ll walk you through natural cleaning methods, expert dishwasher cleaning tips, and easy maintenance tricks that keep your appliance running like new.

Step-by-Step Guide: How to Deep Clean a Dishwasher

Before you start, gather a few essentials:

  • White vinegar
  • Baking soda
  • Soft sponge or toothbrush
  • Microfiber cloth
  • Toothpick (for cleaning holes)
  • Warm water

Now, let’s get your dishwasher sparkling!

Step 1: Empty Your Dishwasher Completely

Woman cleaning a dishwasher filter and spray arms with a toothbrush at home.

First things first—remove all dishes, racks, and utensil holders. You can even take out the filter (if your model allows) for a more thorough clean.
👉 Tip: Run a quick rinse cycle before cleaning to remove any loose debris.

Step 2: Clean the Filter and Drain Area

hite vinegar and baking soda being used to clean the inside of a dishwasher naturally.

Your dishwasher’s filter is the number one culprit for bad smells and poor performance. Take it out and rinse it under warm water. Use a toothbrush to scrub away stuck-on food or grease.

If you find gunk near the drain area, wipe it off with a paper towel. This step helps prevent clogging and improves water drainage.

Step 3: Deep Clean Dishwasher with Vinegar

omemade vinegar bowl placed on the top rack of a dishwasher to remove odor.

White vinegar is a natural powerhouse cleaner—it breaks down grease, neutralizes odors, and removes mineral buildup.

  • Pour 1 cup of white vinegar into a dishwasher-safe bowl.
  • Place it on the top rack of your empty dishwasher.
  • Run a hot water cycle.

This step disinfects your entire machine and dissolves hidden grime.

Step 4: Deodorize with Baking Soda

Person sprinkling baking soda at the bottom of the dishwasher for deodorizing.

After the vinegar cycle, sprinkle 1 cup of baking soda on the bottom of your dishwasher.
Run a short hot water cycle again.

Baking soda acts as a deodorizer and polishing agent—it’ll make your dishwasher smell fresh and shine like new.

Step 5: Clean the Seals, Spray Arms & Racks

Close-up of clogged dishwasher spray arms and tips for cleaning them.

Don’t forget the small parts!

  • Use a toothbrush to scrub the rubber seals around the door.
  • Use a toothpick to unclog spray arm holes.
  • Wipe the racks and utensil baskets with warm, soapy water.

This ensures your dishwasher distributes water evenly during washes.

Step 6: Wipe the Exterior

Before and after photo showing a dirty vs clean dishwasher interior.

Finally, give your machine’s exterior some love.
Use a mix of warm water and vinegar to wipe the control panel, door, and handle. For stainless steel finishes, buff gently with a microfiber cloth.

Natural Dishwasher Cleaner Recommendations

Printable home cleaning checklist for monthly dishwasher deep cleaning routine.

If you prefer eco-friendly products over DIY cleaning, here are some natural dishwasher cleaner options that work great:

  1. Seventh Generation Dishwasher Cleaner – plant-based, safe for septic systems.
  2. Ecover Automatic Dishwasher Tablets – biodegradable and non-toxic.
  3. Lemi Shine Dishwasher Cleaner – removes hard water buildup naturally.
  4. Grab Green Natural Dishwasher Detergent Pods – free from phosphates and dyes.

🛒 These are easily available on Amazon or your local store.

Dishwasher Cleaning Tips for Long-Term Maintenance

Eco-friendly cleaning products arranged beside an open, clean dishwasher.

Keeping your dishwasher clean doesn’t require constant scrubbing. Just follow these dishwasher cleaning tips to maintain freshness:

  • Rinse food scraps off dishes before loading.
  • Run hot water before starting your dishwasher.
  • Leave the door open slightly after each wash to prevent mold.
  • Clean your filter once a week.
  • Run a vinegar rinse once a month.

💧 A few simple habits can extend your dishwasher’s lifespan and improve its performance.

Common Mistakes to Avoid When Cleaning Your Dishwasher

Even when cleaning, it’s easy to make small mistakes that harm your appliance. Avoid these:

  1. ❌ Using bleach with vinegar – this creates toxic fumes.
  2. ❌ Skipping the filter cleaning step.
  3. ❌ Overloading during the cleaning cycle.
  4. ❌ Ignoring door seals and spray arms.
  5. ❌ Using harsh brushes that can damage surfaces.

Following the right process ensures deep cleaning without damage.

How to Remove Dishwasher Smell Naturally

Before and after photo showing a dirty vs clean dishwasher interior.

If your dishwasher smells bad even after a cycle, here’s a quick fix:

  • Place a bowl of white vinegar on the top rack and run a short hot cycle.
  • Sprinkle baking soda on the bottom afterward and run a quick rinse.
  • Add a few drops of lemon essential oil to the detergent dispenser for a refreshing scent.

Conclusion

Now that you know exactly how to deep clean a dishwasher, you can keep your appliance fresh, sparkling, and odor-free with just a few simple ingredients.
A clean dishwasher not only looks better—it performs better, lasts longer, and keeps your dishes truly hygienic.

So next time you notice a weird smell or dull dishes, you’ll know what to do. Start your cleaning routine today and make your kitchen shine effortlessly!

FAQs

How often should I deep clean my dishwasher?

Once every month is ideal to keep it odor-free and efficient.

Can I use bleach to clean my dishwasher?

Avoid bleach if your dishwasher has stainless steel parts—it can corrode them.

What’s the best natural dishwasher cleaner?

White vinegar and baking soda are the best natural options.

Why does my dishwasher smell bad?

It’s usually food buildup in the filter or drain area—clean those regularly.

Can I use vinegar and baking soda together?

Yes, but use them in separate cycles, not at the same time.

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